MAGETWO-98328: Update FedEx Shipping Dates behavior in Tracking Popup

Author: Oleksandr Iegorov

app/code/Magento/Fedex/Plugin/Block/Tracking/PopupDeliveryDate.php

@@ -3,7 +3,6 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
-declare(strict_types=1);
 
 namespace Magento\Fedex\Plugin\Block\Tracking;
 
@@ -26,7 +25,7 @@ class PopupDeliveryDate
      * @return string
      * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      */
-    public function afterFormatDeliveryDateTime(Popup $subject, string $result, string $date, string $time): string
+    public function afterFormatDeliveryDateTime(Popup $subject, $result, $date, $time)
     {
         if ($this->getCarrier($subject) === Carrier::CODE) {
             $result = $subject->formatDeliveryDate($date);